🟢 Safe
Oxalate <25 mg/serving
🟡 Caution
Oxalate 25-99 mg/serving
🔴 Avoid
Oxalate ≥100 mg/serving
🟢

McDonalds, Sausage McMuffin

🟢 Safe — Low Oxalate
22 mg oxalate / serving
Serving: (119 g) | Per 100 g: 0 mg
✓ Medically Reviewed Content reviewed by OxalateWatch Editorial Team. Based on Harvard T.H. Chan SPH oxalate data (2024) and NKF/AUA dietary guidelines.

📊 Nutrition at a Glance

22 mg
Oxalate / serving
Low Oxalate
693 mg
Sodium / 100g
High Na
12.7 g
Protein / 100g
Tier 1
224 mg
Calcium / 100g
Tier 1

🚨 High Sodium Alert

McDonalds contains 693 mg sodium per 100g — well above the recommended limit for kidney stone patients. High sodium intake can increase calcium in urine, raising stone risk.

📏 Oxalate by Serving Size

ServingWeightOxalateVerdict
119 g22 mg Safe
2 x 238 g44 mg Caution
½ x 59 g11 mg Safe

🏷️ Tags

Grains & Pasta 🟢 Oxalate Safe Low Oxalate Calcium-Rich High Sodium Herbs & Spices Processed Food

🟢 See all Grains & Pasta rated Safe for kidney stones →

🔗 Related Foods

❓ Frequently Asked Questions

Can I eat McDonalds with kidney stones?

No red flags here. Just 22 mg per — well below the 25 mg danger line. You can keep McDonalds in your regular rotation. Data comes from Harvard (2024).

What's the oxalate content of McDonalds?

22 mg — that's the oxalate in a standard of McDonalds. For the 100g comparison freaks: 0 mg. Source is Harvard's 2024 food analysis project.

Is McDonalds low or high oxalate?

Low. 22 mg per puts McDonalds firmly in the low-oxalate category. Safe for regular eating if you're managing kidney stones.

What are the best low-oxalate alternatives to McDonalds?

Substitutes exist. The safe alternatives listed below are all low-oxalate foods in the same family as McDonalds. Grab one of those and you dodge the oxalate while keeping similar flavors.

Is McDonalds high in sodium?

Don't just look at oxalate. McDonalds has 693 mg sodium/100g on top of whatever oxalate it carries. Double-tap on your kidneys. Minimize salt elsewhere if you eat this.

🔍 Explore More About This Food

📚 Data Sources

Oxalate: Harvard T.H. Chan School of Public Health (2024) via OHF. Nutrition: USDA FoodData Central (SR Legacy 2018 & Foundation Foods).

📖 Key Scientific References

Taylor EN, Curhan GC. Oxalate intake and the risk for nephrolithiasis. J Am Soc Nephrol. 2007;18(7):2198-2204. PMID: 17538185
Borghi L, Schianchi T, Meschi T, et al. Comparison of two diets for the prevention of recurrent stones in idiopathic hypercalciuria. N Engl J Med. 2002;346(2):77-84. DOI: 10.1056/NEJMoa010369
Fink HA, Akornor JW, Garimella PS, et al. Diet, fluid, or supplements for secondary prevention of nephrolithiasis. Eur Urol. 2009;56(1):72-80. DOI: 10.1016/j.eururo.2009.03.031
Ferraro PM, Taylor EN, Gambaro G, Curhan GC. Dietary and lifestyle factors for primary prevention of nephrolithiasis. BMC Nephrol. 2020;21(1):267. PMID: 32652950
Pearle MS, Goldfarb DS, Assimos DG, et al. Medical management of kidney stones: AUA guideline. J Urol. 2014;192(2):316-324. DOI: 10.1016/j.juro.2014.05.006
Liebman M, Costa G. Effects of calcium and magnesium on urinary oxalate excretion after oxalate loads. J Urol. 2000;163(5):1565-1569. PMID: 10751889
Holmes RP, Assimos DG. The impact of dietary oxalate on kidney stone formation. Urol Res. 2004;32(5):311-316. DOI: 10.1007/s00240-004-0437-3
Lin BB, Lin ME, Huang RH, et al. Dietary treatment and fluid intake for prevention of recurrent calcium stones. PLoS One. 2021;16(4):e0250257. PMID: 33872340
This is dietary reference information, NOT medical advice. Talk to your doctor or a registered dietitian before changing your diet. Oxalate tolerance varies by person, stone type, and medication.